I chose a join as you go with a slip stitch (or sc) in each chain of the motif next to the one being added. I am thinking that has to work. I’ve never done it but it should be similar to how I joined my Seeing Stars.
But even adding the 5th row, it seemed a little more color was needed. So here’s hoping the more the merrier.
What do you think? Also, how would you join them?